Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 250

**Algebra**

I need some help solving this system of equations: 5x - y = 18 –4x – 2y = –6

**Math please help**

4(x-3)=5(x+1)

**Math Help**

Plastic tub has capacity of 13.5 quarts. It can hold 3 times as much liquid as a pail. Pail can hold twice as much liquid as can. Find capacity of pail and that of the can in quarts.

**Math Help**

A shop owner bought 30 folders and some journal. He paid @82.50 for the folders. Each journal cost 10 times as much as a folder. What was the cost of each journal?

**Math **

Simplify 4sqrt6/sqrt30 by rationalizing the denominator

**Sam**

only 2/9 the university students wanted to become math teachers. if 2800 didn't want to become math teachers how many university students were there? So, 2/9 * WN = 2800? How would you work it out?

**trying to understand math**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...

**math**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...

**math**

Eric has a two rocks samples. One has a mass of 600 grams and the other has a mass of 1 kilogram. He recorded the total mass as 7 kilogrmaas. Explain what he did wrong? What should be the correct answer in grams?

**Trig**

oh! thank you!

**Trig**

the sine of an angle is 0.6. the constraint is the angle lies in quadrant II. how do I figure out what x is to solve the six functions?

**CALCULUS**

I don't understand. Why are you adding 1/4? to both sides? I don't see how you are getting a quadratic formula from this. More importantly, thank you guys for the help!

**CALCULUS**

Find a formula for the inverse of the function. y=x^2-x, x>=(greater than or equal to) 1/2 Please give me a step by step explanation. I think my algebra is wrong... Ty

**CALCULUS**

Starting with the graph of f(x)=5x, write the equation of the graph that results from reflecting f(x) about the line y =4. y=_______? Thank you!

**ms1998**

On a windless day, a bird can fly at a constant 10 m/s. It flies 6.0km east and then home again. How much time does the round trip take? I keep getting 600 seconds, but my teacher still tells me it's wrong.

**Elle**

thanks for checking my work

**Elle**

At the school carnival popcorn was given out in paper cones like the one shown(3-diameter and 5 being the height of the cone). Approximately how many cubic inches of popcorn can the cone hold? 1/3TT r^2 h 1/3 TT(1.5)^2(5) 11.78 is approximately 12 cubic inches of popcorn

**Math**

The area of a cylinder is 956m3. If the circular top is halved, what is the new volume?

**algebra**

all

**help**

a number machine takes any number put into it, multiplies it by 3 and then subtracts 2. reuben put a number into the machine. he took the new number that came out and put that number back into the machine. He took the new number that came out and put that back into the machine...

**math**

In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit) 2BA +C6D____ 8AD

**math**

the answer is 5 days because the family and friends eat only half of the gingerbread cookies each day day 1: 2-1=1 day 2: 1+4=5-2=3 day 3: 3+6=9-3=6 day 4: 6+8=14-4=10 day 5: 10+10=20-5=15 You just need to keep adding the old gingerbread cookies with the new and each day he k...

**math**

Sam needs 15 dozen gingerbread cookies. he bakes 2 dozen the first day, 4 dozens the next day, 6 dozens the day after that and this pattern continues. How many days does it take Sam to get his 15 gingerbread cookies if half of each batch gets eaten each night by his family and...

**math**

In the addition problem at the bottom, the sum of the two digits represented by B and C is ?. Each time the same letter appears it represents the same digit.) help

**math**

a number machine takes any number put into it, multiplies it by 3 and then subtracts 2. reuben put a number into the machine. he took the new number that came out and put that number back into the machine. He took the new number that came out and put that back into the machine...

**math**

it's ok. I got it now.

**math**

The graph below shows the rate of natural gas usage (in therms per day) in one household for a 30 - day period. Estimate the total number of therms used during this period. Use left endpoints and rectangles with widths of 3 days. View graph at: postimg.o rg/image/61nw3co3r/ I ...

**math**

Find the area of the shaded region. View the graph and image at: postimg.o rg/image/dg4kt89v1/ Please help me explain this one. I know the ans to this one but can not work out.

**math**

i came up with 165.

**math**

I'm lost. I think am adding wrong.

**math**

The graph below shows the rate of natural gas usage (in therms per day) in one household for a 30 - day period. Estimate the total number of therms used during this period. Use left endpoints and rectangles with widths of 3 days. View graph at: postimg.o r g/image/61nw3co3r/

**calc**

Find the slope of the tangent line at (8,8) for the function (16-x)y^2=x^3 Round your answer to two decimal places.

**math graph**

f(x) = abs(x-8) / x+8 how would the graph look like for this equation?

**math**

Didnt give us the choices yet and that's how the question is written

**math**

the average weight of men in a meeting room is 170 pounds, and average weight of women is 130 pounds. if more than 60% of the people in the room are men, which of the following could be the average weight of all the people in the room?

**math**

How did you get 34% and 16%? Thanks

**business satistics**

How u get tht answer

**Jeremy**

A ⊆ B. Prove P(A|B)>= P(A)

**math**

MATH PLUS MATH IS WHAT????

**math**

MATH

**Math (please help me Steve)**

what about this case, i didnt enumerated it 1 2 4 0 5 2 6 0 1

**math**

find all nonnegative integer solutions of the system x+y<8 x+z<8 t+y<8 z+t<8

**math**

sory a mistake, the corect one problem is find all nonnegative integer solutions of the system x+y<8 x+Z<8 t+y<8 z+t<8

**math**

find all nonnegative integer solutions of the system x+y<8 x+t<8 t+y<8 z+t<8

**Math**

PLEASE SOLVE THE QUESTIONS..INSTEAD OF POSTING IT..BRILLIANT DOES NOT TOLERATE THIS KIND OF AKSING

**Math**

Posting Brilliant Questions!! You will not learn from it..such a spoiled brat!!

**Mathematics**

how did you do that?

**Seth**

graph this equation:6x^2+18x-24=0

**university**

prove 2 | n^2 + n + 1

**Biology**

Identify the molecules that participate in the light dependant reactions and tell what they do.

**Further maths**

The first and third terms of a gp are 5 and 8 respectively what is the 4th term

**math**

i am a 4 digit number. the sum of my digit is same as the product of my digits, who am i?

**Math**

sorry my bad i apologize no question..

**Math**

howmany?

**math**

one tenth of my money is 2.45.how much money have i ?

**Jessica**

Find absolute maximum and minimum for f(x)=(3x^3)−(18x^2)+27x−10 over the closed interval [2,4]. Thank you so much!!

**math**

what is the posiblity of doing the riight thing but the possibitlt were working with is that if u pick a red when there is a blue and you said that

**math**

what is the posiblity of doing the riight thing but the possibitlt were working with is that if u pick a red when there is a blue and you said that

**math**

destiny is going to build a patio. she wants the patio to be 20 feet by 35 feet. what is the perimeter of the patio in yards?

**Math**

Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? 6 square feet 7 square feet 8 square feet 9 square feet 7 square feet is my answer, what's yours?

**Geometric Prorgession**

A bank loan of $500 is arranged to be repaid in two years by equal monthly instalments. Interest, calculated monthly, is charged at 11% p.a on the remaining debt. Calculate the monthly repayment if the first repayment is to be made one month after the loan is granted.

**Geometric Progression**

A mortagge is taken out for $10,000 and is repaid by annual installments of $2,000. Interest is charged on the outstanding debt at 10%, calculated annually. If the first repayment is made one year the after the mortagage is taken out, find out the number of years it takes for ...

**Arithmetic Progression**

In an AP the 6th term is half the 4th term and the 3rd term is 15. a. Find the fist term and the common difference. b. How many times are needed to give a sum that is less than 65?

**Chelsea**

on a farm there are rabbits and chickens. Altogether, there are 20 heads and 50 feet. How many rabbits and chickens are there?

**math**

how do i perform the indicated operation 3 4/5 + 2 2/8 = ?

**Ana**

thank you so much for your help

**Ana**

A group of hikers on a mountain began at an elevation of 3040 feet above sea level and stopped at elevation of 2319 feet above sea level. What was their change in elevation between these points? How can you tell from the change in elevation whether the hikers were going up or ...

**math mean,median,mode,range**

9,6,7,7,2

**Alg1 / 2**

Sorry, please ignore this one

**Alg1 / 2 **

solve the equation & check your solution

**Math**

8/2 [2/ 9] how to simplfy above question.

**Peter**

For all positive integers w and y, where w > y, let the operation ☺ be defined by w ☺ y = (2^(w + y))/(2^(w - y)). For how many positive integers w is w ☺ 1 equal to 4? A. More than four B. None C. One D. Two E. Four *I found only 3/5 as the answer but it ...

**algebra**

The perimeter of a rectangle garden is 80m oits length is 4m more than 5 times its width, find the dimensions of the garden

**Math**

(-5)| 3-6 | (-5)| -3 | (-5)(3) = -15

**Geometry **

Triangle ΔABC has vertices A(2,5), B(8,1) and C(-2,-1) and is a right triangle. If the slope of AB is -2/3 and the slope of AC is 3/2, are the lines parallel, perpendicular or neither?

**math**

Mary's test grades were 77, 85, 77, 82, and 80. Mary's teacher recorded one of her grades incorrectly. Instead of an 85, Mary's second test score should have been a 58. Which measure(s) of central tendency is NOT affected by this change?

**MATH**

Determine how much would be accumulated at the end of 10 years at 7.5% interest if Woody saved $30 every month.

**grade 6 math**

math

**math**

how long did he kick it..like 1 minute?if its one then 58x60(sec)=your answer

**math**

a cat toy costs 5 dollars.how many 5 dollars cat toys can a person by with 3,000,000?

**trig**

bernhardt and julia are observing an eagles nest in a tree. Julia is 75m from the tree, and sees it at an angle of elevation of 42 degrees A)How high up the tree is the nest B)Bernhardt is standing 30m behind julia. At what angle of elevation does he see the nest?

**geometry**

ok ty

**geometry**

chung ho is standing on the top of a building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle to the base of the building is 77 degrees. The buildings are 31m apart. How tall is the other building? thanks for your help.

**MATH**

Richard invited 6 friends to go skating. Of those 6 friends, there are twice as many boys as girls. How many girls were invited to go skating? A. 1 B. 2 C. 3 D. 4 I DON'T WANT MS.SUE TO HELP ME.

**math**

HEY SUE I DON'T WANT YOU ANSWERING ANY QUETIONS THAT HAS A NAME CALLED MATH.

**math**

Penelope is having a party for her friends. She invited ten friends and seven have said they will come. Three of Penelope’s friends haven’t responded yet. Penelope needs to buy party supplies. Which sentence below is true of this situation? A. Penelope needs to buy ...

**math**

Find the unknown value in the following equation: y ÷ 10 = 6 A. 6 B. 60 C. 600 D. 6,000

**math**

Tristan is having a birthday party. He doesn’t want anyone less than 10 years old to come to his party. If y equals age in years, which number sentence expresses his age requirements? A. y < 10 B. 10 = y C. y 10 D. 9 > y

**Calculus**

Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to $20 per microscope per year. storage costs, based on the maximum number of microscopes in the wa...

**Math**

67

**Calculus**

the answer is wrong

**Calculus**

A rectangular garden of area 75 sq ft is to be surrounded on 3 sides by a brick wall costing $12 per foot and on one side by a fence costing $7 per foot. Find the dimensions of the garden that the cost of the materials is minimized Read more: A rectangular garden of area 75 sq...

**jake**

2. Solve this equation: 80 = 3y + 2y + 4 + 1. A. y = –15 B. y = 1/5 C. y = 75 [D. y = 15] i dont realy know if that is correct because i think it could be negative like in a please let me know

**math**

(3/x)^2 how to find the derative of this fraction. having trouble with getting the answers. i need a walkthrough...

**steev**

can u help this the qustion is : A circle passes through the points (1,4)&(5,0) and its centre lies on the line x+y-3=0.Find (i) the equation of the circle and it parametric equations . (ii) the centre,diameter and area of the circle . (iii) the equation of the tangent at (1,4...

**Airplane & Radar**

(Airplane & Radar) An airplane is flying (horizontally) at the height of 6 km on a flight path that will take it directly over a radar tracking station (on ground). If the distance D between the plane and the radar is decreasing at a rate of 300 km/hr, find the speed of the pl...

**math discrete**

(a)Sarah wants to make a bracelet. She needs some beads and goes to a shop where they sell beads in exactly 100 different colours. i. How many ways can she pick 25 beads, each of a different colour? ii. How many ways can she pick any 25 beads? (b) Suppose that Sarah has picke...

**math/science**

what is dimensional analysis and how does it work?

**math**

(TEMPERATURE CHANGE) The rate at which the temperature of an object changes is proportional to the difference between its own temperature and the temperature of the surrounding medium. Express this rate as a function of the temperature of the object